Cable clamp



March 1931- F. H. KNAPP 1,797,194

CABLE CLAMP Filed Nov. 5, 1928 2 Sheets-Shae! l gwua'ntou Freda/EA Knapp March 17, 1931. F, H, N P 1,797,194

CABLE CLAMP Filed Nov. 5, 1928 2 Sheets-Sheet 2 UNITE f Patented Mar. 17, 1931 CABLE CLAMP .Application filed November 5, 1928; Serial No. 317,319.

' My invention relates to ropelclamps, c011 sisting of primary and secondary elements. Me ns; being provided for adapting the same to a wire rope between its extreme ends.

'My ,inventionconsists of a primary slitted sleeve. having-a spiral fluted inner surface, the said sleeve being threaded on itsouter surface. The secondary element consists of a sleeve havinga tapered threaded bore, which 1e communicates with the outer threaded surface of the primary element, allowing the pri-.

,mary element to conform with the taper bore of the secondary element, and in this manner contracting the primary element about the rope.

The prime object of my'inventionis to pro-' vide cable clamp for logging equipment, where'one lme or w re rope 1s tobe ]01I1ed to another l ne between its extreme ends.

A further object of my invention is to provide acablejclamp that can be applied to the wire rope at any desiredpoint without releasing said wire rope from its work.v

A further obj ect of my invention is to provide a cable clamp that can be used on the line Without damaging the line, and can be easily attached to the line, or. removed from the same. 3 1 I A further objectof mydevice is to pro- 7 vide a cable-clamp that will firmly grip the cable, Without separating the strands or kinking the cable. u

v A further object of my device is to pro videa cable clamp having a spiral fluted inner surface to correspond with the spiral twist in the wire rope. I

*A still further object of my invention is to provide a cable clamp that will pass through I a With these and incidental objects in view,

the invention consists in certain novel features of construction and combinationof parts, the essential elements of which are set forth in l the appended claims, and a preferred form of embodiment of which is hereinafter described with reference, to the drawings which accompany and form a part of this specification.

In the drawings:

I '50 I s Fig. 1 is an assembled side view of my invention in place upona wire rope, inthis case the main haul line, havi ng the slack pulling line positioned thereon.

s Fig. 2 is perspective view of'the slitted primary element. ,1 I V I 1 i i Fig; 3 is aperspective'viewof; the locking nut, or secondary element. Fig. 4 is a partial cross sectional view. of my cable clamp about to be clamped to wire rope.

Fig. 5 is a crosssection of'the clamp after being clamped tight to rope v Fig. 6 is a preferred form of wrench. for lockingclamp to rope. Fig. 7 is a perspective viewof another preferred form of clamp;

clamp being placed upon the cable.

Like reference characters refer to like parts throughout the several views. It has been m experience that clamps heretofore separate, the strands of the cable, or kink or damage thesame, when theclamp is removed. In my'cable clamp a primary sleeve 1 and a secondary sleeve 2 is provided. The bore of the primary sleeve 1, has taper spiral surface 3 which conforms'to the twist of the cable 6, to insure a tight and even'grip aboutthesaid cable, without kinking or damaging the cable; Slits L-arefcut length-wise of the sleeve 1. lhe'slittedend of said sleeve has a larger bore thanthe opposite end. The secondary sleeve 2'hasa taperedthread 7 cut on-itsinner surface, which co-acts with: the threaded outer surface 8 ofthe sleeveone. As sleeve 2 is threadedforward on sleeve 1, sleeve 1 is contracted tightly about the cable 19 i i the cableblock-without damagmg he bloc Shoulc r 10 smves asan abutment for the cable, or clamp.

wrench12, to be used, for tightening or loosening the clamp.

In Figs. 7 and 8, I have shown a clamp that V can-be applied to. arable without releasing either end of thecable'from its work. Sleeve 1 has removable section 14, which can be removed from the body of sleeve 1,;when placing the sleeve about the cable. The V shaped ribs 15 of the section *lftco-actswith the V shaped groove 16, to hold the section '11 in alignment with the sleeve 1.

The sleeve 2-is U shaped in form having a hinged gate 17 journaled vaboutpin 18' and latched by the pin 19 or vice versa. A latching bar 18A outwardly extends from the hinged gate 17and the same is adapted for engagement between the locking lugs 19A whenclosechin order that the locking pin 19 may be made to engage within the holes dis posed within the respective elements when the holes become in registerable alignment -with each other. The object of the hinged gate is to create an opening whereby the sleeve may be applied to the cable without releasing the ends of the said cable. The

tongues2O and 21 of the sleeve 2 engage the grooves 22 and 23 of gate 17, the object of which is tokeep thesleeve 2 from spreading when the same is threaded upon the sleeve element 1. A, swivel eye 2% is provided for the receiving of the cable that is to be secured to the cable to which the clamp is applied.

. While the .form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that itis not intended to confine the lnvention to the one form of embodiment herein shown and described, as itis suscepti ble ofembodiment in various forms, all coming within the scope of the claims which fol: low. l 7

What I claim is: j d v 1.: In a device of the class described, consisting of primary and secondary co-a-cting elements, the inner one ofthe co-acting elements having'a slitted 1nner sleeve and a ta-V disturbing the secured end or" the rope.

2. In a device of the class described, the combination of primary and secondary coacting. threaded elements, the primary element consisting of a sleeve hav ng atapered bore, said bore having its greatest diameter opposite its tapered end, spirals disposed within the inner surface of said sleeve, threads disposed upon the outer surface of 7 said sleeve, longitudinal slits disposed within said sleeve, a portion of said sleeve being removable thereby permitting greater far, cility in the use of the device, said portion having ribs disposed at each end of its base, grooves disposed within the oppositely disposed edges of the remaining part of the sleeve in registerable alignment with the ribs, f

'for preventing movement of the gate when in closed position, locking means disposed upon the gate and upon the U-shaped bored element, and a primary threaded element adapted for being threadfibly engaged by the secondary element.

t. In a device of the classdescribed, the combination of primary and secondary co-' acting threaded elements, means disposed within the primary element for enabling the primary element to adapt itself to the contour of a cable .upon the application of pressure thereon, means disposedwithin the secondary element for enabling the secondary element to intimately engage with and apply pressure upon the primary element, and means disposed withinboth the primary and secondary elements for permitting the removal'of both or either of them from any part of a cable.

5. Ina device of. the classedescribed,- the combination with a primary threaded element, secondary element comprising a U-shaped bored body member, threads disposed withinits inner portion, a gate hingedly secured to the body member, said gate having its inner portion threaded in registerable alignment with the threads disposed within the body member, a tongue longitudinally disposedat each edgeof the body member, a groove longitudinally disposed at oppositely disposed edges of the gate and in registerable alignment, with the tongues, locking lugs outwardly extending from thebody member, and

a latching barg'dispo sed upon the gate in registerable alignment with the locking lugs.

6. Y In a device of the class described, in combination with a secondary threaded element, a'primary element comprising asleeve having a tapered bore, spirals disposed within the inner surface of the sleeve, threads disposed about its peripheral edge, slitsdisposed within the body of. the sleeve, a portion of said sleeve being removable, ribs disposed at each end of the collar portion of said sleeve portion, and grooves disposed within the realignment with the ribs;

mainingportion of the sleeve'in registerable said ribs and groovesadapted for preventing V: movement of the removable port on when placed into position, and a secondary threadedelementa ep dtot e cla r en eth 

